world; were the logs for one voyage of the entire whale fleet carefully collated, then the migrations of the sperm whale would be found to correspond in invariability to those of the herring-shoals or the flights of swallows.

On this hint, attempts have been made to construct elaborate migratory charts of the sperm whale.*

*Since the above was written, the statement is happily borne

out by an official circular, issued by Lieutenant Maury, of

the National Observatory, Washington, April 16th, 1851. By

that circular, it appears that precisely such a chart is in

course of completion; and portions of it are presented in